Bobbin winding machine



Oct. 29, 1957 w. BAKKER 2,811,319

BOBBIN WINDING MACHINE Filed June 12. 1956 INVENTOR [Villem Balbfer BY 7% 72m ATTORNEY United States Patent BOBBIN WINDING MACHINE Willem Bakker, Arnhem, Netherlands, assignor to zhmerican Euka Corporation, Euka, N. C., a corporation of Delaware Application June 12, 1956, Serial No. 590,973

Claims priority, application Netherlands June 14, 1955 5 Claims. (Cl. 242--35.5)

This invention relates to bobbin winding apparatus and more particularly to apparatus of the type in which threads or yarns are laid up on a plurality of spindles, each of which is served by a traversing thread guide that is actuated in common with the other traverse mechanisms of the machine. The present invention constitutes an improvement by the use of which spool changing or tying after accidental thread breakage may be conveniently eifected without affecting the operation of the machine as a whole.

For many years bobbins have been wound by placing them over vertical spindles which are rotated by a belt. Usually the belt runs an oval course and serves a large number of bobbins, the contact between the belt and an individual bobbin being effected by some sort of a pivoted rrller so that the belt can be selectively shifted to and from driving engagement with a particular bobbin. The traverse mechanisms for the various spindles extend from a common reciprocating rail.

These traverse mechanisms lay up successive courses of thread on the bobbin during the winding operation. In the event of thread breakage at a particular station, or in the case of dofiing a single station as distinct from dofiing the entire machine, it has been possible accord ing to the prior art to stop the rotation of the bobbin, but the reciprocation of the traverse mechanism continues unless the machine is shut down, and the movement of the traversing thread guide back and forth lengthwise of the bobbin makes it very difficult to thread up or to tie a break or otherwise to deal with an emergency at one station only.

it is an object of the present invention to overcome the foregoing difiiculty to provide for a way of maiutaining the traverse mechanism out of interfering rela tionship with an individual bobbin spindle so that thread tying or individual doffing can be conveniently accomplished while the machine as a whole continues to run.

It is proposed according to the present invention so to mount the traversing thread guides that they may be individually moved from a normal traversing position to a position of movement relative to the traverse actuating rail which is compatible'with easy access to the respective spindle.

Other objects and advantages of the present invention will be apparent upon consideration of the following detailed description of a preferred embodiment thereof in conjunction with the annexed drawings wherein:

Figure l is a schematic view in vertical cross section of a portion of a multi-station bobbin winding machine incorporating the improvement of the present invention; and

Figure 2 is a fragmentary top plan view of two stations of the machine of Figure l, the left station depicted in Figure 2 being in the operative or traversing position and the right station being in the disconnected or dofling position.

In the drawings, reference numerals and 11 represent bobbin winding spindles. These spindles are supported from longitudinal beams 12 and 13 in bearings 14 and 15 which guide them for rotation about a vertical axis in the manner already known to the art. The rails 12 and 13 constitute a part of a complete machine frame which is generally designated by numeral 16. The spindles 10 and 11 are provided respectively with pulleys 17 and 18 and these pulleys peripherally cooperate with a belt 19 which is guided around the machine in an oval course which is not fully shown but is apparent from the belt direction arrows in Figure 2. The belt 19 is maintained in driving frictional engagement with the spindle 17 by a pressure roller 20 and a similar pressure roller 2] maintains the belt 19 in engagement with the pulley 18. A bracket 22 pivoted on the beam 12 coaxially with the spindle 10 supports the pressure roller 20 for movement in the direction of the arrow to release the belt 19 from its frictional driving engagement with the pulley 17. A bracket 23 similarly supports the pressure roller 21 and similarly functions as is apparent from Figure 2. By locking means, forming no part of the present invention and not shown, the brackets 22 and 23 may be locked in the position shown in the drawing during the time that the spindles are being driven. As is customary in the art, the spindles are surrounded by tubes onto which the thread is wound. One of these tubes 24 is shown in Figure l, the corresponding tube on the left side of Figure 1 being shown as covered with thread.

Near the bottom of the machine frame 16 there are supporting platforms 25 and 26 on which thread packages are placed to constitute thread sources for the bobbin winding operation. Above the board 25 and axially above the package thereon, there are located two thread guides 27 and 28. Similar thread guides 29 and 30 lie above the axis of the package on the board 26. The guides 27 and 29 function as balloon guides. Whereas the upper guides 28 and 30 are associated with a thread oiling mechanism and serve to maintain the thread in tangential contact with oiling rollers 31 and 32 respectively. These oiling rollers are in peripheral contact with cylinders 33 and 34 which rotate partly immersed in oil baths in containers 35 and 36 respectively. The dip rollers or cylinders 33 and 34 are keyed to the shaft on which they are mounted and this shaft is driven by conventional means, not shown, but located at the end of the machine and serving all of the stations on that side of the machine.

As a result of the equipment just described, the thread leaving the surface of rollers 31 and 32 is permanently wette-d with oil. The amount of oil taken depends on the depth of immersion of the dip rollers 33 and 34 and the speed with which they are rotated and hence peripherally drive the rollers 31 and 32 respectively. Splash guards are provided at 37 and 38. (See Fig. 1.)

From the description above, the manner of supply of the thread to the bobbins and the manner of the rotation of the bobbins will be understood. Each bobbin is provided with a traverse mechanism and these are generally indicated at 39 and 40. The traverese mechanism are actuated by a common rail 41 which is supported in a portion of the machine frame for vertical reciprocation. The rail 41 is shown in Figure 1 at the top of its stroke. It moves back and forth as indicated by the arrows. The traversing thread guides 39 and 40 are each in the general form of an L-bracket, a common end of each is pivotally connected to the bottom of the rail at 43 and 44 respectively and the other end of each bracket carries the thread guide that does the traversing. In the drawing, these guides bear numerals 45 and 46. At the angle of each traversing giude assembly there is a resilient wire hook at 47 and 48 respectively, which snaps over the top of rail 41 and holds one shank of the L-section fiat against the rail 41 as can be seen at the left side of Figure 1. Under these conditions, the guide 45 reciprocates bodily with the rail and functions just as though it were a part of the rail. The connections at 47 and 48 are quick detachable ones, however, and if either is released, the guide is then free to pivot about the point of connection to the rail at 41. When this happens, the end having the guide on it (see the guide 46) does not reciprocate vertically any more in parallelism to the spindle axis, but instead rocks back and forth transversely of the machine. In order to limit the clockwise movement of the right hand guides as viewed in Figure l and the counterclockwise movement of the left hand guides, stop platforms 49 and 50 are provided substantially at the plane of the bottom of the spindle. These platforms as well as the other structural features of the traversing mechanism can best be understood by detailed reference to Figure 2.

it will be noted that the rail 12 has a bracket 51 extend out from it that supports the stop 49. Furthermore, the outer end of the traversing guide assembly 39 has a little bar 52 thereon which rides on the stop 49 when the latch at 47 is released. The latch at 48 is shown in the released position and the pin 53 on the assembly 40 is actually resting on the stop 50. This stop is supported from frame element 12. The thread guides 45 and 46 are held by little brackets 55, 56 which extend out from the main assembly but move bodily with it. The traverses are so staggered that the one on opposite sides of the machine are offset, as can be seen in Figure 2.

While this entire description has been concerned with two stations of a multi-station machine, it will be apparent that all of the stations of the machine are equipped like the two here shown. The top of the machine has a platform at and this is simply a storage platform for additional supplies of spools of thread to be wound.

If a single instance of the use of the present invention is described, the purpose and function of the various parts will be quite clear. So long as the latch, such as the latch 48. is fastened or snapped across the top of the traverse bar 41, the whole assembly 40 which is a rigid one. will move up and down with the traverse 41. This will cause the guide 46 to lay up successive courses of yarn on the tube 24 surrounding the spindle 11. If breakage occurs, the bracket 23 is rotated in the direction of the arrow to move the pressure roller 21 away from the belt, thereby to disengage the belt 19 from its driving relationship to the pulley 18. This stops the pulley 18. but does not stop any other pulley in the machine. The operator then grasps the traversing member 40 and releases the latch 48. This causes the L- bracket to pivot in a clockwise direction about the point of articulation 44 as can be seen in Figure 1. It continues this movement until the little pin 53 hits the stop 50. During this whole operation, the traversing bar 41 continues to move up and down, but the L-member 40 does not move up and down with it any more, but now begins to pivot relative to it. The effect of this will be to move the piece 53 back and forth across the stop 50. As the traverse 41 moves down from the Figure 1 position, the pin 53 will move out or to the right of its Figure 2 position. s iding back and forth on the platform or stop 50. This movement does not interfere with the manual activities of the operator and he goes ahead and ties a knot or otherwise takes the necessary steps to re-establish a continuous running thread between the supply package on the tube on which the bobbin is being wound. As soon as the thread run is re-established, the operator watches the rail and when it is at its lowest position, he grasps the L-bracket 40 and snaps the latch 48 back over the top of the rail and the thread begins to run again onto the bobbin, beginning at the bottom of it.

What is claimed is:

1. In winding apparatus, a plurality of spindles, means to rotate the spindles, a traversing thread guide for each spindle, a reciprocating element common to a plurality of said guides and means connecting each guide to said common means for adjustment between a rigid position of bodily movement with said common means for laying up courses of thread on the respective spindle and a position of movement relative to said common means with the guide maintained adjacent the bottom of the respective spindle.

2. In winding apparatus, a plurality of spindles, means to rotate the spindles, a traversing thread guide for each spindle, a reciprocating element common to a plurality of said guides, a bracket having one of said guides thereon, means pivoting said bracket for movement from a first position fixed with respect to said common means with the guide in traversing relation to the respective spindle and a second position pendant from said pivoting means with the guide resting adjacent the base of the spindle and moving only transversely thereof and means quick detachably to lock said bracket in said first position.

3. In winding apparatus, a plurality of spindles, means to rotate the spindles, a traversing thread guide for serving each spindle, a reciprocating element common to a plurality of said guides, a plurality of brackets, each bracket having one of said guides thereon, a stop adjacent each spindle, means pivoting each bracket for movement for a first position fixed with respect to said common means with the respective guide in traversing relation to spindle which it serves and a second position pendant from said pivoting means and resting on the respective stop with the guide located adjacent the base of the spindle which it serves and means quick detachably to lock said bracket in said first position.

4. In Winding apparatus, a plurality of spindles, means to rotate the spindles, a traversing thread guide for serving each spindle, a reciprocating rail, a plurality of brackets, each bracket having one of said guides thereon, means pivoting each bracket to said rail for movement for a first position fixed with respect to said rail with the guide in traversing relation to the respective spindle and a second position pendant from said rail with the guide resting adjacent the base of the spindle and moving only transversely thereof and a resilient hook detachably cooperating with the top of said rail to lock said bracket in said first position.

5. In winding apparatus, a plurality of spindles, means to rotate the spindles, a traversing thread guide for each spindle, a reciprocable rail common to a plurality of said guides, a plurality of L-brackets, each having one of said guides thereon at a common end thereof, means pivotably connecting each bracket at its other end to said rail for movement from a first position fixed with respect to said rail with the respective guide in traversing relation to the respective spindle, and a second position pendant from the pivoting means with a guide resting adjacent the base of the spindle and moving only transversely thereof and resilient means quick detachably locking said bracket at the angle thereof to the top of said rail.

No references cited. 

